An uncertain future: evolution of Covid variants concerns US scientists

"This is a global health problem, and if we continue to cut the budget for vaccines in developing countries, we're going to get the next Omicron," Linas said. "Because we have these pockets where the virus goes to reproduce, it's already extended the epidemic by at least a year – and if it keeps on happening, we're going to chase our tail indefinitely."

https://www.theguardian.com/world/2022/apr/09/covid-evolution-next-variations-mutations-science-fears